Manometer.



UAAS.

Mu'OIVHTHFiK APPLICATION FILED MAY14,1913.

Patented Aug. 18, 1914Y n w uw connected to en index oi recording mnn'onilinen fwiom 'it may @www it iene-wn that l: lini'ifz if oi tlie iilin of ll'rnssi-e? residing 1i" bei@ in, t e 'L'r'eimen Engin-el., have .inv certain new and nselnl lnninovemei t liinnonieteis, of which the following is e speeifiestion. I rll`liis invention 'elntes to diiierential me. noni'eteisitoi' use in measuring the quantityl of, steam or other pressure Huid passing thiough a conduit, und relates to that tvpe of manometei' adapted to register the eiflei'enee pressure on bot-l1 sides of n throt- 'ding de'vieesneh as a flange or the like, within the liuid conduit, the difference in' presente enabling the quantity .of 'luid passing througlithe conduit to benseextnined iitliei'to, in order to register the difierenee in pressure yon notie sides of the tlirottling device, it has been' pi'oposed lto cause the .steam on botli sides of tile tlirottling devies to eet upon the opposite faces of n piston on' compound piston Working within n eoii'esponding cylinder or eylinders to which the ste-uni is supplied7 the piston bedevice so :is to indienteoi' record the dit'eeijiee 'in pressure upon e suitable dial or recording` instrument. This device has; however, the objectionable feature that, owing to the friction between the piston und the cylinder und owing to the friction between the piston rod and its stuiling box, when n. stullingj box vis provided, the indicating mechanism connected to the piston does not respond readily enough to 'the vuvintions in pressure. The present invention luis for its object to overcome (lie nlol-esnid (lisndvalntnge und for this purpose the piston o1? compound piston constantly rotated or given :i Constant partial 4:votation or i-oeling nioi'ion about its axis7 (fnus overcoming the friction ol" the pzu'ts,

lin order 'that the invention muy be more dearly understood reference is-nmde to the neeon'ipzmying drawings showingY two dilielont "forms of my invention by Way ol' eX- uinple, Figure l being; e'dizigi'omnnitic View gpui'tly in section showing a n'ianon'ietei havzhii@ n compound piston, while Fig. 2 is n *uiiilzu view also partly in section showing uinanometer lullvring a single piston.

llileeming' to Figa 1 of the drawings: e and @l designate pistons connected together by e piston lrod 'b so as to form a compound "kton, the misten heads av and a? Working Specification o Letters atent.

"device/.entetxensinitted by Ineens oi.t e coll:

onltlie piston i'od to if iolleir f ino-unten onder on wey ot in pressure enlbeth sides of the tlniottline u on the'indez e which' nivoted :it t' the jecting at right angles to the index e Wlieli `irnoves over e suitable seele .7L 'wliiehnmy graduated to' indicate the quantity of fluid passing through the conduit y eoi'fesponding to Ythe difference 'in piessme on betie. sides of the tl'irottling device fr.

In oidel to overcome the :friction lietv'een tee piston needs a, al and the cylinders e and Q1 respectively, the piston red vetnted according to tlie pi'esent :invention li ineens oit an electro-meter or other sun source of poivef adapted to rotate :t pnley t oveifwliieli is ti'nined 's eend poss-,ing zn'onnd a giooved pulley 7c fixed upon piston red 7). The pulley Z is of suon i that 'the bend z5 is eepziole o movingelo it in eoi'ifoi'niity `with t1 movements of the 'piston rod v Refeuing now toFig. 2 of tliedrewings:

A single piston woi'isI Within :i corre spending eylindei` 02, ,tlieitluid beine' snp plied to 'the opposite sides of the piston by .other ends either against the piston .22 er? illustrated, against disln'su and el tively ixed upon the piston rods b1 and. 'o2 respectively which pass through suitable stu'fiing boxes o and o1 respectively The piston rod Zillee'rries n pair of Collars il between which engages n, roller f1 carried :it one end of 'e double-armed lever e? pivoted at s1 :indndapted to reeoid upon :L snitnlile recording strip fw passing around n intypen,

roll The piston (L2 is eontinuonsly i'oteted from the eleetrornotoi' e' by ineens o e ,s ne i'eeiproeetuig llo .'jby a band or rope t. y The mechanism is `such that the rotary motion will continue to be imparted to the piston a2 during its 'reciprocating motion, the Worm wheel n being of suficient ,l'n'eadth to engage with the jvcrm m when moved axially by the piston.

I I claiml. 3 1. In a device of the character described, a pressure gage comprising a cylinder te which the pressure fluid is supplied, a pis ton movable in said cylinder, a pressure Tecorder actuated by said piston, and powerdrven mechanism for imparting rotary motion to said piston about its aXis, said mechanism being capable yof translation in accordance with the reciprocations of'sad piston, within the cylinder.-

. 2. In a device Aef the character described, a pressuregage comprisikng'a cylinder to which the pressureuldissupplied, `a piston movable in said cylinder, a pressurerecorder actuated by said piston, and power-driven mechanism for imparting an angular motion' 4 nicnas@ a pressure gage comprising a cylinder, av

piston therein, means for supplying the pressure fluid to said cylinder on both sides of said piston, 'and means for imparting a rntary motion to said piston about its axis, said means moving in conformity with the mevement of said piston.

a. In a device of the character described, a pressure gage comprising a cylinder, a piston therein, means for supplying the pressure iiuid to said cyiinder on both sides of said piston, and means for imparting an angular motion to said piston about its axis, said means moving in conformity with the movement of said piston.

In testimony whereof I have affixed my signature in presence of two Witnesses.

FRITZ HAAS,

'Witnesses EMIL LiKMUND, CHAnLorrn Lmnn'r. 

